======================== unified (from filesystem) ========================
                                         'bitrate'  '116.338'
                                        'duration'  '220'
                                          'artist'  'The Tops'
                                     'text_people'  ''
                                         'release'  'Dimitri 60s 70s'
                                           'title'  'I Found You'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-OLDST-2', "
 "'Q-HHRNBTT-1', 'Q-SYN-2', 'Q-BUSY-2', 'Q-GRIT-2', 'Q-PLAY-3', 'q-bass-4', "
 "'Q-CHART-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'Q-MIXBEAT-2']")
                                      'lastfmtags'  "['indie', 'indie pop', 'pop', 'canadian', 'tops']"
                                     'discogstags'  "['doo wop', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '138.3'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'TALB' (Album/Movie/Show title)                     'Dimitri 60s 70s'
'TBPM' (BPM (beats per minute))                     '138.3'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'I Found You'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Tops'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf58.45.100'
'TXXX:Q-BUSY'                                       '2'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '2'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['doo wop', 'rock']
'TXXX:lastfmtags'                                   ['indie', 'indie pop', 'pop', 'canadian', 'tops']
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.89 dB'
'TXXX:replaygain_track_peak'                        '0.468707'
'TXXX:youtube'                                      'rwySKJ8L9WU'

========================== row from database ==========================
                                              'id'  1477259
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Dimitri/60s70s/The Tops - I Found You-rwySKJ8L9WU.mp3
                                         'working'  None
                                         'bitrate'  116
                                    'duration_sec'  220
                                           'genre'  ifs-songwriter
                                        'filesize'  3210157
                                           'mtime'  1637330695
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 60s70s rwySKJ8L9WU ifs songwriter
                                      'tag_artist'  The Tops
                                     'tag_release'  Dimitri 60s 70s
                                       'tag_title'  I Found You
                                             'bpm'  138.3
                                    'search_title'  'found':2 'i':1 'you':3
                                   'search_artist'  'the':1 'tops':2
                                  'search_release'  '60s':2 '70s':3 'dimitri':1
                                     'search_rest'  '60s70s':1 'ifs':3 'rwy':5 'rwyskj8l9wu':2 'skj8l9wu':6 'songwriter':4
                                    'search_combo'  '60s':7C '60s70s':9 '70s':8C 'dimitri':6C 'found':2A 'i':1A 'ifs':11 'rwy':13 'rwyskj8l9wu':10 'skj8l9wu':14 'songwriter':12 'the':4B 'tops':5B 'you':3A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-2', 'Q-GRIT-2', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-3', 'Q-SYN-2', 'q-other-3', 'Q-BUSY-2', 'Q-HAP-2', 'Q-PLAY-3', 'q-bass-4']
                                      'lastfmtags'  ['indie', 'indie pop', 'pop', 'canadian', 'tops']
                                        'tag_date'  1970
                                     'discogstags'  ['doo wop', 'rock']

============================== file details ==============================
                                           'mtime'  1637330695.1423252  (2021-11-19 15:04:55)
                             'size'  3210157